From 154ce9b1ce22532a68f95f2291fa12fd90c49fde Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 19 Jun 2021 14:10:36 +0200
Subject: Make sources relative to the build-file (include paths are still
 relative to project rootdir). Add -b to control build-dir.

---
 libcppbuild.cc | 66 ++++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 41 insertions(+), 25 deletions(-)

(limited to 'libcppbuild.cc')

diff --git a/libcppbuild.cc b/libcppbuild.cc
index d58705d..f641a90 100644
--- a/libcppbuild.cc
+++ b/libcppbuild.cc
@@ -10,6 +10,7 @@
 #include <algorithm>
 #include <list>
 #include <array>
+#include <deque>
 
 #include <getoptpp/getoptpp.hpp>
 
@@ -26,7 +27,8 @@
 using namespace std::chrono_literals;
 
 std::list<std::shared_ptr<Task>> taskFactory(const BuildConfiguration& config,
-                                             const Settings& settings)
+                                             const Settings& settings,
+                                             const std::string& sourceDir)
 {
 	std::filesystem::path targetFile(config.target);
 
@@ -34,7 +36,8 @@ std::list<std::shared_ptr<Task>> taskFactory(const BuildConfiguration& config,
 	std::list<std::shared_ptr<Task>> tasks;
 	for(const auto& file : config.sources)
 	{
-		tasks.emplace_back(std::make_shared<TaskCC>(config, settings, file));
+		tasks.emplace_back(std::make_shared<TaskCC>(config, settings,
+		                                            sourceDir, file));
 		objects.push_back(tasks.back()->target());
 	}
 
@@ -93,8 +96,7 @@ std::array<Config, 100> configFiles;
 int numConfigFiles{0};
 
 // TODO: Use c++20 when ready, somehing like this:
-//void reg(const std::source_location location =
-//         std::source_location::current())
+//int reg(const std::source_location location = std::source_location::current())
 int reg(const char* location,
         std::vector<BuildConfiguration> (*cb)())
 {
@@ -105,7 +107,7 @@ int reg(const char* location,
 	return 0;
 }
 
-void recompileCheck(int argc, char* argv[])
+void recompileCheck(const Settings& settings, int argc, char* argv[])
 {
 	bool dirty{false};
 
@@ -117,11 +119,18 @@ void recompileCheck(int argc, char* argv[])
 
 	std::filesystem::path binFile("cppbuild");
 
-	std::cout << "Recompile check (" << numConfigFiles << "):\n";
+	if(settings.verbose > 1)
+	{
+		std::cout << "Recompile check (" << numConfigFiles << "):\n";
+	}
+
 	for(int i = 0; i < numConfigFiles; ++i)
 	{
 		std::string location = configFiles[i].file;
-		std::cout << " - " << location << "\n";
+		if(settings.verbose > 1)
+		{
+			std::cout << " - " << location << "\n";
+		}
 		std::filesystem::path configFile(location);
 		if(std::filesystem::last_write_time(binFile) <=
 		   std::filesystem::last_write_time(configFile))
@@ -163,21 +172,17 @@ void recompileCheck(int argc, char* argv[])
 
 int main(int argc, char* argv[])
 {
-	recompileCheck(argc, argv);
-
-	Settings settings;
-	// TODO: Set from commandline
-	settings.builddir = "build/foo";
+	Settings settings{};
 
+	settings.builddir = "build/";
 	settings.parallel_processes =
 		std::max(1u, std::thread::hardware_concurrency() * 2 - 1);
-
 	settings.verbose = 0;
 
 	dg::Options opt;
 
 	opt.add("jobs", required_argument, 'j',
-	        "Number of parallel jobs.",
+	        "Number of parallel jobs. (default: cpucount * 2 - 1 )",
 	        [&]() {
 		        try
 		        {
@@ -191,8 +196,15 @@ int main(int argc, char* argv[])
 		        return 0;
 	        });
 
+	opt.add("build-dir", required_argument, 'b',
+	        "Set output directory for build files (default: build).",
+	        [&]() {
+		        settings.builddir = optarg;
+		        return 0;
+	        });
+
 	opt.add("verbose", no_argument, 'v',
-	        "Be verbose.",
+	        "Be verbose. Add multiple times for more verbosity.",
 	        [&]() {
 		        settings.verbose++;
 		        return 0;
@@ -208,28 +220,32 @@ int main(int argc, char* argv[])
 
 	opt.process(argc, argv);
 
+	recompileCheck(settings, argc, argv);
+
 	std::filesystem::path builddir(settings.builddir);
 	std::filesystem::create_directories(builddir);
 
-	std::vector<BuildConfiguration> build_configs;
+	std::deque<BuildConfiguration> build_configs;
+	std::list<std::shared_ptr<Task>> tasks;
 	for(int i = 0; i < numConfigFiles; ++i)
 	{
-		//std::string location = configFiles[i].file;
+		std::string path =
+			std::filesystem::path(configFiles[i].file).parent_path();
+		if(settings.verbose > 1)
+		{
+			std::cout << configFiles[i].file << " in path " << path << "\n";
+		}
 		auto configs = configFiles[i].cb();
 		for(const auto& config : configs)
 		{
 			build_configs.push_back(config);
+			const auto& build_config = build_configs.back();
+			std::vector<std::string> objects;
+			auto t = taskFactory(build_config, settings, path);
+			tasks.insert(tasks.end(), t.begin(), t.end());
 		}
 	}
 
-	std::list<std::shared_ptr<Task>> tasks;
-	for(const auto& build_config : build_configs)
-	{
-		std::vector<std::string> objects;
-		auto t = taskFactory(build_config, settings);
-		tasks.insert(tasks.end(), t.begin(), t.end());
-	}
-
 	for(auto task : tasks)
 	{
 		task->registerDepTasks(tasks);
-- 
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